CN113006818A - Novel stainless steel impervious segment and preparation method thereof - Google Patents
Novel stainless steel impervious segment and preparation method thereof Download PDFInfo
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- CN113006818A CN113006818A CN202110201149.6A CN202110201149A CN113006818A CN 113006818 A CN113006818 A CN 113006818A CN 202110201149 A CN202110201149 A CN 202110201149A CN 113006818 A CN113006818 A CN 113006818A
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- 239000010935 stainless steel Substances 0.000 title claims abstract description 84
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 84
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000004567 concrete Substances 0.000 claims abstract description 75
- 238000001723 curing Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000003487 anti-permeability effect Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000002178 crystalline material Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000011150 reinforced concrete Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/086—Methods of making concrete lining segments
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
本发明属于土木工程组合结构技术领域，公开了一种新型的不锈钢抗渗管片及其制备方法，不锈钢抗渗管片包括：不锈钢壳、不锈钢栓钉、结晶型混凝土；制备方法为：制作不锈钢壳，在不锈钢壳的内部底面焊接不锈钢栓钉；制备结晶型混凝土；在不锈钢壳的顶部盖上模具并通过模具上的预留孔进行混凝土浇筑，在混凝土浇筑完毕后，开启10秒左右的弱震；振动结束后打开顶部模具，对管片外弧面进行人工收面，最后放下模具盖板并支好；采用养护膜包裹养护法进行养护即可得到新型不锈钢抗渗管片。本发明通过不锈钢栓钉让不锈钢壳与结晶型混凝土组合工作并提升组合管片的整体力学性能，使结构更加安全可靠；并且其抗渗、耐腐蚀和耐久性能得到了提升。
The invention belongs to the technical field of civil engineering composite structures, and discloses a new type of stainless steel impermeable segment and a preparation method thereof. The stainless steel impermeable segment comprises a stainless steel shell, a stainless steel stud and a crystalline concrete; Weld stainless steel studs on the inner bottom surface of the stainless steel shell; prepare crystalline concrete; cover the top of the stainless steel shell with a mold and pour concrete through the reserved holes on the mold, after the concrete is poured, turn on the weak vibration for about 10 seconds ; After the vibration is over, open the top mold, manually close the outer arc surface of the segment, and finally put down the mold cover and support it; adopt the curing film wrapping and curing method to maintain the new stainless steel impermeable segment. In the invention, the stainless steel stud allows the stainless steel shell and the crystalline concrete to work in combination and improves the overall mechanical properties of the combined segment, so that the structure is more secure and reliable; and its impermeability, corrosion resistance and durability are improved.
Description
Technical Field
The invention belongs to the technical field of civil engineering composite structures, and particularly relates to a novel stainless steel anti-permeability duct piece and a preparation method thereof.
Background
At present, with the continuous forward development of social economy, the number of people in cities is continuously increasing, and the daily travel congestion problem of people is widely concerned by people. Subway projects are being continuously built and developed in order to effectively relieve traffic pressure caused by the gathering of a large number of people in cities. In the construction process of subway engineering, the shield method has the advantages of good construction environment, safe excavation, high tunneling speed, small influence on environment and the like, and becomes a main construction method for constructing subway tunnels, river-crossing tunnels and submarine tunnels. The shield tunnel segment is a stressed main body of a tunnel structure and is an important structure which directly influences the safety and the durability of the tunnel structure.
At present, common reinforced concrete segments of C50 or C60 are generally adopted in the shield tunnel. Because of the reasons of low tensile strength, large brittleness and the like of the common concrete, the common reinforced concrete segment is easy to have damages such as edge breakage, corner breakage and the like in the transportation and assembly processes, and the normal use of the common reinforced concrete segment is influenced. In addition, the common reinforced concrete pipe pieces are large in thickness and heavy, so that the transportation cost is improved, and the efficiency and the quality of the pipe piece assembly are seriously influenced. And ordinary reinforced concrete section of jurisdiction easily appears the fracture infiltration and leads to the inside reinforcing bar corrosion of section of jurisdiction in the tunnel operation in-process of later stage, and then leads to its freeze thawing resistance, resistance to harmful ion erosion and resistance to carbonization capacity variation.
The common reinforced concrete segment is usually provided with the tenon and the mortise so as to improve the rigidity of the indirect joint between the segments, control the uneven settlement and improve the waterproof performance of the joint. However, the concave-convex tenon position is easy to generate stress concentration in the assembling process to cause damage or cracking, and the waterproof performance of the duct piece is weakened. The water leakage problem seriously reduces the durability and the structural safety of the tunnel, shortens the service life of the tunnel and greatly improves the operation and maintenance cost of the tunnel.
The production of the common reinforced concrete shield segment generally utilizes a finished segment mould to bind a steel reinforcement framework and to seal and pour concrete for molding. The concrete mainly adopts high-strength impervious concrete, and the reliable bearing capacity and waterproof performance of the concrete are ensured by a high-temperature steam curing mode. Some duct pieces also incorporate a suitable amount of steel or synthetic fibers into the concrete to improve duct piece toughness. The related production process is complicated, time-consuming and labor-consuming, and has high requirements on production equipment and processing technology.
Through the above analysis, the problems and defects of the prior art are as follows:
(1) the conventional common reinforced concrete shield segment has the defects that the corrosion resistance and the impermeability are poor due to the corrosion of internal reinforcing steel bars caused by cracking, the service life of the common segment is greatly limited, and the later maintenance repair cost is increased.
(2) Although the toughness of the duct piece can be improved by adding the fibers into the duct piece concrete, the internal structure and the compactness of the concrete are not obviously improved, and the mechanical property and the durability of the duct piece cannot be fundamentally improved. And meanwhile, the light and thin and light weight of the duct piece is difficult to realize due to the reinforced concrete structure duct piece.
(3) The outer arc surface of the duct piece is a smooth surface, the bonding force between the duct piece and the grouting layer is weaker, the integral performance of a lining structure formed by the duct piece and the grouting layer is weaker, and the capacity of resisting the load of the surrounding rock is poorer.
The difficulty in solving the above problems and defects is: the shield segment material is mainly made of common concrete material, and the common concrete material is brittle material, so that cracks are easy to occur, and the cracks are difficult to ensure not to occur in the installation and transportation processes; the shield segment not only meets the strength and rigidity requirements of the structure, but also bears the water and soil pressure around the tunnel and some special load effects, and in a complex underground structure, the phenomena of tunnel deformation, collapse and water seepage are prevented, so that the design of the segment is complex, and the segment is difficult to realize lightness and thinness; the adhesive force between the outer arc surface of the pipe piece and the grouting layer is difficult to improve.
The significance of solving the problems and the defects is as follows: the shield constructs the section of jurisdiction as permanent supporting construction in the subway tunnel, plays very important effect to the safety of whole tunnel, solves above problem and can improve the anticorrosive and impervious performance of section of jurisdiction, has improved the durability and the structural safety nature in tunnel, has increased the life in tunnel and greatly reduced the operation maintenance cost and the cost of transportation in tunnel.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a novel stainless steel impervious tube sheet and a preparation method thereof.
The present invention is thus achieved, a novel impervious stainless steel duct piece, comprising: stainless steel shells, stainless steel studs and crystalline concrete; the stainless steel shell consists of a bottom surface, two side surfaces and two end surfaces, wherein stainless steel studs are welded on the inner surface of the bottom surface part of the stainless steel shell, and the stainless steel shell is filled with crystalline concrete. The shape of stainless steel shell is the surface of section of jurisdiction promptly, and is wrapped up the crystallization type concrete inside like the mould, and the stainless steel peg plays the effect of connecting piece, combines crystallization type concrete and stainless steel shell together, forms a whole, resists external load jointly. The combined stainless steel pipe anti-permeability segment is a stainless steel surface in the tunnel at the later stage of use, and has the effects of corrosion resistance and high temperature resistance; the crystalline concrete is connected with the excavated soil body, and the crystalline concrete can self-repair micro cracks in the concrete; meanwhile, the crystalline concrete can grow crystalline crystals to the inside of the crystalline concrete along the gaps of the seepage of the surrounding soil body on the contact surface of the crystalline concrete and the soil body, so that the connection between the crystalline concrete and the soil body is strengthened, and the effect of partial seepage resistance and flow guide can be achieved.
Another object of the present invention is to provide a novel method for preparing a stainless steel impervious sheet, comprising the steps of:
manufacturing a stainless steel shell, and welding a stainless steel stud on the bottom surface inside the stainless steel shell;
step two, preparing crystalline concrete;
covering a mould on the top of the stainless steel shell, and pouring concrete through a preformed hole on the mould, wherein when the concrete is poured, the vibrators can be started to perform layered pouring when the feed ports of the mould are full of concrete, and after the concrete is poured, weak shock can be started for about 10 seconds to eliminate bubbles on the inner arc surface;
opening the top mold after the concrete vibration is finished, manually closing the outer arc surfaces of the pipe sheets, immediately covering a plastic film after the outer arc surfaces are smoothly closed to prevent the surface from being dehydrated too fast, and finally putting down a mold cover plate and supporting;
and step five, curing by adopting a curing film wrapping and curing method, namely wrapping and adhering the curing film on the surface of the concrete above the segment to keep the concrete moist and avoid accumulated water from being formed on the surface of the concrete, wherein the curing period is 7 days, and the novel stainless steel anti-permeability segment can be obtained after curing for 7 days.
Further, in the second step, the preparation of the crystalline concrete comprises the following steps:
(1) fully mixing cement, recycled coarse aggregate, fine aggregate and water in a concrete mixer according to the proportion;
(2) adding the water in parts by weight, and fully stirring for 10-15 min;
(3) adding the crystalline material in parts by weight, and fully stirring until the crystalline material is uniformly mixed;
(4) and taking out of the tank to obtain the crystalline concrete.
The invention also aims to provide the application of the novel stainless steel impervious tube sheet in the construction of subway tunnels, river-crossing tunnels and submarine tunnels.
By combining all the technical schemes, the invention has the advantages and positive effects that: the novel stainless steel anti-permeability duct piece and the preparation method thereof provided by the invention not only solve the problem of shortage of concrete aggregate resources, but also can effectively improve the durability and the anti-permeability of concrete. The stainless steel has good mechanical properties, excellent anti-explosion and anti-impact properties and corrosion resistance, and is small in maintenance workload and low in cost in a life cycle. The stainless steel is adopted as the pipe piece shell, so that the splicing efficiency and quality of the pipe pieces can be effectively improved, and meanwhile, the structure between the pipe pieces is firm and the waterproof performance of the joint of the pipe pieces is improved. In addition, the stainless steel studs can reasonably and efficiently combine the stainless steel shell and the crystalline concrete and improve the overall mechanical property of the combined duct piece. Because the outside of the novel stainless steel combined segment is the crystalline concrete, the impermeability of the segment structure can be effectively improved, and the corresponding crystalline crystals in the concrete can grow to the surrounding soil body to improve the integrity of the segment. Meanwhile, the stainless steel shell on the inner side has excellent anti-permeability and corrosion-resistant properties; the dual guarantee improves the impermeability and the corrosion resistance of this type of combination section of jurisdiction. The improvement of this kind of novel section of jurisdiction whole mechanical properties can effectively reduce tunnel excavation diameter, reduces section of jurisdiction cost of transportation, reduces the section of jurisdiction and transports, assembles the collision damage and the fracture of in-process, improves and assembles efficiency and accuracy, improves tunnel structure's durability, reduces tunnel operation maintenance cost by a wide margin.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
FIG. 1 is a cross-sectional view of a novel stainless steel barrier sheet according to an embodiment of the present invention.
In fig. 1: 1. stainless steel shell 2, stainless steel bolt 3, crystallization type concrete.
Fig. 2 is a schematic view of the overall structure of the novel stainless steel impervious sheet provided by the embodiment of the invention.
Fig. 3 is a schematic structural view of a stainless steel stud according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a stainless steel case provided in an embodiment of the present invention.
FIG. 5 is a flow chart of a method for making a novel stainless steel impervious sheet according to embodiments of the present invention.
FIG. 6 is a flow chart of a method for preparing crystalline concrete according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Aiming at the problems in the prior art, the invention provides a novel stainless steel impervious tube sheet and a preparation method thereof, and the technical scheme of the invention is described in detail below by combining the attached drawings.
As shown in fig. 1 to 4, the novel stainless steel impervious sheet according to the embodiment of the present invention comprises: the steel core comprises a stainless steel shell 1, stainless steel studs 2 and crystalline concrete 3;
the stainless steel shell consists of a bottom surface, two side surfaces and two end surfaces, stainless steel studs are uniformly welded on the inner surface of the bottom surface of the stainless steel shell, and the stainless steel shell is filled with crystalline concrete.
As shown in fig. 5, the preparation method of the novel stainless steel impervious tube sheet provided by the embodiment of the present invention comprises the following steps:
s101, manufacturing a stainless steel shell, and welding stainless steel studs on the bottom surface of the interior of the stainless steel shell;
s102, preparing crystalline concrete;
s103, covering a mold on the top of the stainless steel shell, and pouring concrete through a preformed hole on the mold, wherein when the concrete is poured, the vibrators can be started to perform layered pouring when the feed ports of the mold are full of concrete, and after the pouring of the concrete is finished, weak shock can be started for about 10 seconds to eliminate bubbles on the inner arc surface;
s104, after the concrete vibration is finished, opening the top mold, manually closing the outer arc surface of the pipe sheet, immediately covering a plastic film after the outer arc surface is smoothly closed to prevent the surface from being dehydrated too fast, and finally putting down a mold cover plate and supporting;
s105, curing by adopting a curing film wrapping and curing method, namely wrapping and adhering a curing film on the surface of the concrete above the segment to keep the concrete moist and avoid accumulated water from being formed on the surface of the concrete, wherein the curing period is 7 days, and the novel stainless steel anti-permeability segment can be obtained after curing for 7 days;
as shown in fig. 6, in step S102, the preparation of the crystalline concrete provided by the embodiment of the present invention includes the following steps:
s201, fully mixing cement, recycled coarse aggregate, fine aggregate and water in a concrete mixer according to a proportion;
s202, adding the water in parts by weight, and fully stirring for 10-15 min;
s203, adding the crystalline materials in parts by weight, and fully stirring until the crystalline materials are uniformly mixed;
and S204, taking out of the tank to obtain the crystalline concrete.
In step S201, the ratios of the cement, the recycled coarse aggregate, the fine aggregate, and the water provided in the embodiment of the present invention are, for example, as shown in table 1 below:
TABLE 1 raw material amounts for the respective examples
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A novel preparation method of a stainless steel anti-permeability segment is characterized by comprising the following steps:
manufacturing a stainless steel shell, and welding a stainless steel stud on the bottom surface inside the stainless steel shell;
step two, preparing crystalline concrete;
covering a mould on the top of the stainless steel shell and pouring concrete through a preformed hole on the mould;
step four, after the concrete vibration is finished, opening the top mold, manually closing the outer arc surfaces of the pipe sheets, covering a plastic film to prevent the surface from being dehydrated too fast after the outer arc surfaces are smoothly closed, and putting down and supporting the mold cover plate;
and step five, curing by adopting a curing film wrapping curing method.
2. The method of claim 1, wherein in step two, the preparation of the crystalline concrete comprises the following steps:
(1) fully mixing cement, recycled coarse aggregate, fine aggregate and water in a concrete mixer according to the proportion;
(2) adding the water in parts by weight, and fully stirring for 10-15 min;
(3) adding the crystalline material in parts by weight, and fully stirring until the crystalline material is uniformly mixed;
(4) and taking out of the tank to obtain the crystalline concrete.
3. The method for preparing a novel stainless steel impervious tube sheet according to claim 1, wherein in the third step of concrete pouring, when the feed inlet of the mold is filled with concrete, the vibrator is started to perform layered pouring, and after the concrete pouring is finished, the vibrator is started for 10 seconds to eliminate bubbles on the inner arc surface.
4. The method of making a novel stainless steel impervious sheet of claim 1 wherein said fifth step comprises: through the surface of the concrete of will maintaining the membrane parcel adhesion in section of jurisdiction top to make the concrete keep moist and avoid its surface to form ponding, the maintenance cycle is 7 days, supports and obtains novel stainless steel impervious section of jurisdiction.
5. The utility model provides a novel impervious section of jurisdiction of stainless steel which characterized in that, novel impervious section of jurisdiction of stainless steel includes: stainless steel shells, stainless steel studs and crystalline concrete; the stainless steel shell consists of a bottom surface, two side surfaces and two end surfaces, stainless steel studs are uniformly welded on the inner surface of the bottom surface of the stainless steel shell, and the stainless steel shell is filled with crystalline concrete.
6. The novel stainless steel barrier sheet of claim 5 wherein said stainless steel studs are formed of a combination of crystalline concrete and a stainless steel shell.
7. The novel stainless steel impervious tube sheet of claim 5 wherein said crystalline concrete is attached to an excavated earth for self-repairing microcracks within the concrete; meanwhile, crystals grow on the contact surface of the soil body along the gaps of the seepage of the surrounding soil body.
8. The application of the novel stainless steel impervious sheet as claimed in any one of claims 5 to 7 in the construction of subway tunnels.
9. The application of the novel stainless steel impervious sheet as claimed in any one of claims 5 to 7 in river-crossing tunnel construction.
10. The use of the novel stainless steel impervious sheet according to any one of claims 5 to 7 in the construction of a submarine tunnel.
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| CN202110201149.6A CN113006818A (en) | 2021-02-23 | 2021-02-23 | Novel stainless steel impervious segment and preparation method thereof |
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| CN116044440A (en) * | 2022-12-28 | 2023-05-02 | 中煤科工集团北京华宇工程有限公司 | A segment prefabricated component, a segment support structure having the same and a manufacturing method thereof |
| CN116163763A (en) * | 2022-12-28 | 2023-05-26 | 中煤科工集团北京华宇工程有限公司 | Segment prefabrication assembly, shield segment with segment prefabrication assembly and manufacturing method of shield segment |
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| CN114872184A (en) * | 2022-05-06 | 2022-08-09 | 中煤科工集团北京华宇工程有限公司 | Method for manufacturing shield segment and method for manufacturing shield pipeline |
| CN114872184B (en) * | 2022-05-06 | 2023-12-22 | 中煤科工集团北京华宇工程有限公司 | Method for manufacturing shield segment and method for manufacturing shield pipeline |
| CN115559749A (en) * | 2022-12-08 | 2023-01-03 | 湖南大学 | Segment structure for updating shield tunnel lining segment and construction method thereof |
| CN116044440A (en) * | 2022-12-28 | 2023-05-02 | 中煤科工集团北京华宇工程有限公司 | A segment prefabricated component, a segment support structure having the same and a manufacturing method thereof |
| CN116163763A (en) * | 2022-12-28 | 2023-05-26 | 中煤科工集团北京华宇工程有限公司 | Segment prefabrication assembly, shield segment with segment prefabrication assembly and manufacturing method of shield segment |
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Application publication date: 20210622 |